Allergy symptoms and asthma attacks are sometimes triggered by the same allergens, but the physical reactions of the human bodies involved can be very different.  Allergy sufferers usually develop symptoms in the upper respiratory system.  Linings of the nose and throat become inflamed and excess mucus is produced.  Stuffy nasal passages and sore throats can occur.  Asthmatics whose symptoms are triggered by allergens experience reactions in the lower respiratory system, the bronchial passageways and lungs.  Since asthma is a chronic disease in which these airways are already inflamed, allergens can cause the immune system to overreact. Already inflamed airway tissues swell, and the muscle bands around the bronchi tighten.  These allergen-related physical changes can ultimately result in an asthma attack.

P.S.   An allergist can prescribe treatments to help keep allergy and asthma symptoms under control.

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